Checking the content of the file

Question

Can somebody help me my problem is that I need to check whether a certain program places the comments correctly ex. /**/ this is the only comment that we are going to chek. I do have the program however it doesn,t work .
Here is the code can somebodu help me please.
import java.io.*;
class Check
     public static void main(String args[])
          boolean sw;
          BufferedReader in = new BufferedReader(new FileReader("monkey.txt"));
          String str;
          String ch;
          int state = 1;
          while ((str = in.readLine()) !=null){
          char ch = in.getAnyChar();
            switch(state){
                 case 1: //Q1
                      if (ch =='/')
                           state = 2;
                      else if (ch == '*')
                           state = 6;
                      else
                           state = 1;
                      break;
                 case 2: //Q2
                      if (ch == '*')
                           state = 3;
                      else if (ch == '/')
                           state = 6;
                      break;
                 case 3: //Q3
                      if (ch == '*')
                           state = 4;
                      else if (ch == '/')
                           state = 3;
                      else
                           state = 3;
                      break;
                 case 4: //Q4
                      if (ch == '/')
                           state = 5;
                      else if (ch == '*')
                           state = 4;
                      else
                           state = 3;
                      break;
                 case 5: //Q5
                      if (ch == '/')
                           state = 2;
                      else if (ch == '*')
                           state =     6;
                      else
                           state = 5;
                      break;
                 case 6: //Q6
                      state = 6;
                      break;
          if (state == 5)
               System.out.println ("Errors Found");
          else
               System.out.println ("Compilation Complete");
         in.close();
}

Answer 1

public static final STATE_NORMAL = 0;
public static final STATE_COMMANT = 0;
public static void main(String args[]){
   int state = 0;
   BufferedReader in = new BufferedReader(new FileReader("monkey.txt"));
   String str;
   char prev = '0';
   char ch ='0';
   while ((str = in.readLine()) !=null){
      for (int i=0; i<str.length(); i++){
         prev = ch;
         ch = str.charAt(i);
         switch(state){
               case STATE_NORMAL:
                                               if ((prev == '/') && (ch == '*')){
                                                    state = STATE_COMMENT;
                                               break;
                 case STATE_COMMENT:
                                              if ((prev == '*') && (ch == '/')){
                                                    state = STATE_NORMAL;
}